"We've gotten an incredible number of requests for BBM to come to Windows Phone. In the coming weeks we'll be ready to welcome millions of Windows Phone users to the growing BBM community," said BlackBerry in a blog post.

"If you're not ready to report bugs, respond to surveys and provide feedback - better to wait just a bit longer for the full release."

Released for iOS and Android devices last year, BBM has gone on to reach more than 80 million users since going cross-platform.